image_widget_crop.module

<?php

/**
 * @file
 * Contains image_widget_crop.module.
 */

define('IMAGE_WIDGET_CROP_JS_CDN', 'https://cdnjs.cloudflare.com/ajax/libs/cropper/2.3.4/cropper.min.js');
define('IMAGE_WIDGET_CROP_CSS_CDN', 'https://cdnjs.cloudflare.com/ajax/libs/cropper/2.3.4/cropper.min.css');

use Drupal\Core\Entity\EntityInterface;
use Drupal\Core\Form\FormStateInterface;
use Drupal\Core\Routing\RouteMatchInterface;

/**
 * Implements hook_help().
 */
function image_widget_crop_help($route_name, RouteMatchInterface $route_match) {
  switch ($route_name) {
    case 'help.page.image_widget_crop':
      $output = '';
      $output .= '<h3>' . t('About') . '</h3>';
      $output .= '<p>' . t('Implement CROP API into the fields image');
      $output .= '<h3>' . t('Try module') . '</h3>';
      $output .= '<p>' . t('You can Test ImageWidgetCrop in action directly with the sub-module, "ImageWidgetCrop example" to test differents usecase of this module');
      $output .= '</dl>';
      return $output;
  }
}

/**
 * Implements hook_field_widget_info_alter().
 */
function image_widget_cropfield_widget_info_alter(array &$info) {
  // Let a new field type re-use an existing widget.
  $info['image_image']['field_types'][] = 'image_widget_crop';
}

/**
 * Implements hook_libraries_info().
 */
function image_widget_crop_libraries_info() {
  $libraries = [
    'cropper' => [
      'name' => 'cropper',
      'vendor url' => 'https://github.com/fengyuanchen/cropper',
      'download url' => 'https://cdnjs.com/libraries/cropper',
      'version arguments' => [
        'file' => 'cropper.min.js',
        'pattern' => '/Cropper v(.*)/',
        'lines' => 2,
      ],
      'files' => [
        'js' => [
          'cropper.min.js' => [],
        ],
        'css' => [
          'cropper.min.css' => [],
        ],
      ],
    ],
  ];
  return $libraries;
}

/**
 * Implements hook_library_info_alter().
 */
function image_widget_crop_library_info_alter(&$libraries, $extension) {
  if ($extension != 'image_widget_crop') {
    return;
  }

  $config = \Drupal::config('image_widget_crop.settings');
  $js = $config->get('settings.library_url');
  $css = $config->get('settings.css_url');
  // Explicit configuration takes priority.
  if (!empty($js) && !empty($css)) {
    $files = ['js' => $js, 'css' => $css];
    foreach ($files as $type => $file_path) {
      // Evaluate if the path are an local or external.
      $is_local = parse_url($file_path, PHP_URL_SCHEME) === NULL && strpos($file_path, '//') !== 0;
      // In that location $file_path are placed on root of module.
      // not in drupal root.
      $data = ($is_local && substr($file_path, 0, 1) !== '/') ? '/' . $file_path : $file_path;
      if ($type === 'js') {
        $libraries['cropper'][$type][$data] = [
          'type' => $is_local ? 'file' : 'external',
          'minified' => TRUE,
        ];
      }
      else {
        $libraries['cropper'][$type]['component'][$data] = [
          'type' => $is_local ? 'file' : 'external',
          'minified' => TRUE,
        ];
      }
    }
  }
  // If Libraries exist and cropper library is available via Libraries API.
  elseif (\Drupal::moduleHandler()->moduleExists('libraries')
    && ($info = libraries_detect('cropper'))
    && $info['installed']) {
    $libraries['cropper']['version'] = $info['version'];
    foreach ($info['files'] as $type => $files) {
      // Fetch all possible entry.
      foreach ($files as $data => $option) {
        if (is_numeric($data)) {
          $option = "/{$info['library path']}/{$option}";
        }
        elseif (empty($option['type']) || $option['type'] == 'file') {
          $data = "/{$info['library path']}/{$data}";
        }
      }

      if ($type == 'css') {
        $libraries['cropper']['css']['theme'][$data] = $option;
      }
      else {
        $libraries['cropper'][$type][$data] = $option;
        $libraries['cropper'][$type][$data] = $option;
      }
    }
  }
  else {
    // Fallback to CDN.
    $js = IMAGE_WIDGET_CROP_JS_CDN;
    $libraries['cropper']['js'][$js] = [
      'type' => 'external',
      'minified' => TRUE,
    ];
    $css = IMAGE_WIDGET_CROP_CSS_CDN;
    $libraries['cropper']['css']['component'][$css] = [
      'type' => 'external',
      'minified' => TRUE,
    ];
    $libraries['cropper']['version'] = 'web-hosted';
  }
}

/**
 * Implements hook_form_FORM_ID_alter().
 */
function image_widget_crop_form_file_form_alter(&$form, FormStateInterface $form_state, $form_id) {
  /** @var \Drupal\file_entity\Entity\FileEntity $file */
  $file = $form_state->getFormObject()->getEntity();
  $mime_type = $file->getMimeTypeType();
  $operation = $form_state->getFormObject()->getOperation();
  $crop_config = \Drupal::config('image_widget_crop.settings');
  if ($mime_type == 'image' && ($operation == 'edit' || $operation == 'inline_edit')) {
    $form['image_crop'] = [
      '#type' => 'image_crop',
      '#file' => $file,
      '#crop_type_list' => $crop_config->get('settings.crop_list'),
      '#crop_preview_image_style' => $crop_config->get('settings.crop_preview_image_style'),
      '#show_default_crop' => $crop_config->get('settings.show_default_crop'),
      '#warn_mupltiple_usages' => $crop_config->get('settings.warn_mupltiple_usages'),
    ];
    $form['actions']['submit']['#submit'][] = 'image_widget_crop_form_submit';
  }
}

/**
 * Implements hook_entity_extra_field_info().
 */
function image_widget_crop_entity_extra_field_info() {
  $return = [];
  $return['file']['image']['form']['crop_preview_wrapper'] = [
    'label' => t('Crop image'),
    'weight' => 10,
  ];

  return $return;
}

/**
 * Implements hook_entity_insert().
 */
function image_widget_crop_entity_insert(EntityInterface $entity) {
  \Drupal::service('image_widget_crop.manager')->buildCropToEntity($entity);
}

/**
 * Implements hook_entity_update().
 */
function image_widget_crop_entity_update(EntityInterface $entity) {
  \Drupal::service('image_widget_crop.manager')->buildCropToEntity($entity);
}

/**
 * Form submission handler for image_widget_crop_form_file_form_alter.
 *
 * @param array $form
 *   The complete form array.
 * @param \Drupal\Core\Form\FormStateInterface $form_state
 *   The current state of the form.
 */
function image_widget_crop_form_submit(array &$form, FormStateInterface $form_state) {
  \Drupal::service('image_widget_crop.manager')->buildCropToForm($form_state);
}

/**
 * Implements hook_filefield_sources_widgets().
 */
function image_widget_crop_filefield_sources_widgets() {
  return ['image_widget_crop'];
}

/**
 * Implements hook_imce_supported_widgets_alter().
 */
function image_widget_crop_imce_supported_widgets_alter(array &$widgets) {
  $widgets[] = 'image_widget_crop';
  return $widgets;
}